Wasn't Dorothy Gale taught not talk to strangers? Wizard of Oz Question?

Well as you can see in the movie she doesn't actually seem to listen to any thing her aunt and uncle tell her so of cause, with her nature she would be willing to help some1 in need, if it meant they may have any information on how to get out of a place that she wasn't sure of, like a tourist asking for directions sorta thing. But remember she was weary of things that were still a little odd, like the munchkins, but because of the sorta girl she is she didn't feel threatened by the the tin man and the scarecrow as they were rather helpless themselves, Maybe that made her feel less alone. Saying that though yeah if that movie had been a little more R18 then it coulda got a bit more interesting. I mean come on you don't send killer monkeys out to "disable" things that cant even die with out completely disposing of the bodies properly. Um also with out getting to into the this, How could people of never seen the " Wizard of Oz" i mean he musta seen some one like set up a meeting to reserve a wee posy in the center of the town. Where he lived, he cant of just all of a sudden appeared and then every1 knew him as there "King" ..........................?????